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Jiri Bencf0706e82007-05-05 11:45:53 -07001/*
2 * Copyright 2002-2005, Instant802 Networks, Inc.
3 * Copyright 2005-2006, Devicescape Software, Inc.
4 * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz>
Johannes Bergd98ad832014-09-03 15:24:57 +03005 * Copyright 2013-2014 Intel Mobile Communications GmbH
Jiri Bencf0706e82007-05-05 11:45:53 -07006 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as
9 * published by the Free Software Foundation.
10 */
11
12#include <net/mac80211.h>
Jiri Bencf0706e82007-05-05 11:45:53 -070013#include <linux/module.h>
14#include <linux/init.h>
15#include <linux/netdevice.h>
16#include <linux/types.h>
17#include <linux/slab.h>
18#include <linux/skbuff.h>
19#include <linux/etherdevice.h>
20#include <linux/if_arp.h>
Jiri Bencf0706e82007-05-05 11:45:53 -070021#include <linux/rtnetlink.h>
Jiri Bencf0706e82007-05-05 11:45:53 -070022#include <linux/bitmap.h>
Jean Pihete8db0be2011-08-25 15:35:03 +020023#include <linux/pm_qos.h>
Juuso Oikarinen68542962010-06-09 13:43:26 +030024#include <linux/inetdevice.h>
Eric W. Biederman881d9662007-09-17 11:56:21 -070025#include <net/net_namespace.h>
Jiri Bencf0706e82007-05-05 11:45:53 -070026#include <net/cfg80211.h>
Johannes Berga65240c2013-01-14 15:14:34 +010027#include <net/addrconf.h>
Jiri Bencf0706e82007-05-05 11:45:53 -070028
Jiri Bencf0706e82007-05-05 11:45:53 -070029#include "ieee80211_i.h"
Johannes Berg24487982009-04-23 18:52:52 +020030#include "driver-ops.h"
Johannes Berg2c8dccc2008-04-08 15:14:40 -040031#include "rate.h"
Luis Carlos Cobof7a92142008-02-23 15:17:18 +010032#include "mesh.h"
Jiri Bencf0706e82007-05-05 11:45:53 -070033#include "wep.h"
Johannes Berg2c8dccc2008-04-08 15:14:40 -040034#include "led.h"
Michael Wue0eb6852007-09-18 17:29:21 -040035#include "cfg.h"
Jiri Bence9f207f2007-05-05 11:46:38 -070036#include "debugfs.h"
Jiri Bencf0706e82007-05-05 11:45:53 -070037
Johannes Berg0d143fe2008-09-11 00:01:59 +020038void ieee80211_configure_filter(struct ieee80211_local *local)
Johannes Berg4150c572007-09-17 01:29:23 -040039{
Johannes Berg3ac64be2009-08-17 16:16:53 +020040 u64 mc;
Johannes Berg4150c572007-09-17 01:29:23 -040041 unsigned int changed_flags;
42 unsigned int new_flags = 0;
43
Johannes Berg53918992007-09-26 15:19:47 +020044 if (atomic_read(&local->iff_promiscs))
Johannes Berg4150c572007-09-17 01:29:23 -040045 new_flags |= FIF_PROMISC_IN_BSS;
46
Johannes Berg53918992007-09-26 15:19:47 +020047 if (atomic_read(&local->iff_allmultis))
Johannes Berg4150c572007-09-17 01:29:23 -040048 new_flags |= FIF_ALLMULTI;
49
Ben Greear8a690672012-04-17 10:54:16 -070050 if (local->monitors || test_bit(SCAN_SW_SCANNING, &local->scanning) ||
51 test_bit(SCAN_ONCHANNEL_SCANNING, &local->scanning))
Michael Wu8cc9a732008-01-31 19:48:23 +010052 new_flags |= FIF_BCN_PRBRESP_PROMISC;
53
Johannes Berg7be50862010-10-13 12:06:24 +020054 if (local->fif_probe_req || local->probe_req_reg)
55 new_flags |= FIF_PROBE_REQ;
56
Michael Wu8cc9a732008-01-31 19:48:23 +010057 if (local->fif_fcsfail)
58 new_flags |= FIF_FCSFAIL;
59
60 if (local->fif_plcpfail)
61 new_flags |= FIF_PLCPFAIL;
62
63 if (local->fif_control)
64 new_flags |= FIF_CONTROL;
65
66 if (local->fif_other_bss)
67 new_flags |= FIF_OTHER_BSS;
Johannes Berg4150c572007-09-17 01:29:23 -040068
Igor Perminove3b90ca2009-08-04 16:48:51 +040069 if (local->fif_pspoll)
70 new_flags |= FIF_PSPOLL;
71
Johannes Berg3ac64be2009-08-17 16:16:53 +020072 spin_lock_bh(&local->filter_lock);
Johannes Berg4150c572007-09-17 01:29:23 -040073 changed_flags = local->filter_flags ^ new_flags;
74
Jiri Pirko22bedad32010-04-01 21:22:57 +000075 mc = drv_prepare_multicast(local, &local->mc_list);
Johannes Berg3ac64be2009-08-17 16:16:53 +020076 spin_unlock_bh(&local->filter_lock);
77
Johannes Berg4150c572007-09-17 01:29:23 -040078 /* be a bit nasty */
79 new_flags |= (1<<31);
80
Johannes Berg3ac64be2009-08-17 16:16:53 +020081 drv_configure_filter(local, changed_flags, &new_flags, mc);
Johannes Berg4150c572007-09-17 01:29:23 -040082
83 WARN_ON(new_flags & (1<<31));
84
85 local->filter_flags = new_flags & ~(1<<31);
86}
87
Johannes Berg3ac64be2009-08-17 16:16:53 +020088static void ieee80211_reconfig_filter(struct work_struct *work)
89{
90 struct ieee80211_local *local =
91 container_of(work, struct ieee80211_local, reconfig_filter);
92
93 ieee80211_configure_filter(local);
94}
95
Johannes Berg55de9082012-07-26 17:24:39 +020096static u32 ieee80211_hw_conf_chan(struct ieee80211_local *local)
Johannes Bergb2c258f2007-07-27 15:43:23 +020097{
Johannes Berg1ea6f9c2012-10-24 10:59:25 +020098 struct ieee80211_sub_if_data *sdata;
Karl Beldan675a0b02013-03-25 16:26:57 +010099 struct cfg80211_chan_def chandef = {};
Johannes Berg55de9082012-07-26 17:24:39 +0200100 u32 changed = 0;
Johannes Berge8975582008-10-09 12:18:51 +0200101 int power;
Felix Fietkauffd27782010-07-29 17:36:43 +0200102 u32 offchannel_flag;
Johannes Bergb2c258f2007-07-27 15:43:23 +0200103
Felix Fietkauffd27782010-07-29 17:36:43 +0200104 offchannel_flag = local->hw.conf.flags & IEEE80211_CONF_OFFCHANNEL;
Karl Beldan675a0b02013-03-25 16:26:57 +0100105
Simon Wunderlich7ca15a02013-07-08 16:55:56 +0200106 if (local->scan_chandef.chan) {
107 chandef = local->scan_chandef;
Ben Greearb23b0252011-02-04 11:54:17 -0800108 } else if (local->tmp_channel) {
Karl Beldan675a0b02013-03-25 16:26:57 +0100109 chandef.chan = local->tmp_channel;
110 chandef.width = NL80211_CHAN_WIDTH_20_NOHT;
111 chandef.center_freq1 = chandef.chan->center_freq;
112 } else
113 chandef = local->_oper_chandef;
Ben Greearb23b0252011-02-04 11:54:17 -0800114
Karl Beldan675a0b02013-03-25 16:26:57 +0100115 WARN(!cfg80211_chandef_valid(&chandef),
116 "control:%d MHz width:%d center: %d/%d MHz",
117 chandef.chan->center_freq, chandef.width,
118 chandef.center_freq1, chandef.center_freq2);
119
120 if (!cfg80211_chandef_identical(&chandef, &local->_oper_chandef))
Ben Greearb23b0252011-02-04 11:54:17 -0800121 local->hw.conf.flags |= IEEE80211_CONF_OFFCHANNEL;
122 else
123 local->hw.conf.flags &= ~IEEE80211_CONF_OFFCHANNEL;
124
Felix Fietkauffd27782010-07-29 17:36:43 +0200125 offchannel_flag ^= local->hw.conf.flags & IEEE80211_CONF_OFFCHANNEL;
Johannes Berge8975582008-10-09 12:18:51 +0200126
Karl Beldan675a0b02013-03-25 16:26:57 +0100127 if (offchannel_flag ||
128 !cfg80211_chandef_identical(&local->hw.conf.chandef,
129 &local->_oper_chandef)) {
130 local->hw.conf.chandef = chandef;
Jouni Malinen72bdcf32008-11-26 16:15:24 +0200131 changed |= IEEE80211_CONF_CHANGE_CHANNEL;
132 }
Johannes Berg8318d782008-01-24 19:38:38 +0100133
Johannes Berg0f782312009-12-01 13:37:02 +0100134 if (!conf_is_ht(&local->hw.conf)) {
135 /*
136 * mac80211.h documents that this is only valid
137 * when the channel is set to an HT type, and
138 * that otherwise STATIC is used.
139 */
140 local->hw.conf.smps_mode = IEEE80211_SMPS_STATIC;
141 } else if (local->hw.conf.smps_mode != local->smps_mode) {
142 local->hw.conf.smps_mode = local->smps_mode;
143 changed |= IEEE80211_CONF_CHANGE_SMPS;
144 }
145
Simon Wunderlich0430c882013-07-08 16:55:55 +0200146 power = ieee80211_chandef_max_power(&chandef);
Vasanthakumar Thiagarajana8302de2009-01-09 18:14:15 +0530147
Johannes Berg1ea6f9c2012-10-24 10:59:25 +0200148 rcu_read_lock();
149 list_for_each_entry_rcu(sdata, &local->interfaces, list) {
150 if (!rcu_access_pointer(sdata->vif.chanctx_conf))
151 continue;
Felix Fietkau764152f2014-04-10 15:06:48 +0200152 if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN)
153 continue;
Johannes Berg1ea6f9c2012-10-24 10:59:25 +0200154 power = min(power, sdata->vif.bss_conf.txpower);
155 }
156 rcu_read_unlock();
Vasanthakumar Thiagarajana8302de2009-01-09 18:14:15 +0530157
Johannes Berge8975582008-10-09 12:18:51 +0200158 if (local->hw.conf.power_level != power) {
159 changed |= IEEE80211_CONF_CHANGE_POWER;
160 local->hw.conf.power_level = power;
161 }
Johannes Berg8318d782008-01-24 19:38:38 +0100162
Johannes Berg55de9082012-07-26 17:24:39 +0200163 return changed;
164}
165
166int ieee80211_hw_config(struct ieee80211_local *local, u32 changed)
167{
168 int ret = 0;
169
170 might_sleep();
171
172 if (!local->use_chanctx)
173 changed |= ieee80211_hw_conf_chan(local);
174 else
175 changed &= ~(IEEE80211_CONF_CHANGE_CHANNEL |
176 IEEE80211_CONF_CHANGE_POWER);
177
Johannes Berge8975582008-10-09 12:18:51 +0200178 if (changed && local->open_count) {
Johannes Berg24487982009-04-23 18:52:52 +0200179 ret = drv_config(local, changed);
Johannes Bergd73782f2008-10-07 12:04:34 +0200180 /*
Reinette Chatre447107f2008-12-04 14:49:08 -0800181 * Goal:
Johannes Bergd73782f2008-10-07 12:04:34 +0200182 * HW reconfiguration should never fail, the driver has told
183 * us what it can support so it should live up to that promise.
Reinette Chatre447107f2008-12-04 14:49:08 -0800184 *
185 * Current status:
186 * rfkill is not integrated with mac80211 and a
187 * configuration command can thus fail if hardware rfkill
188 * is enabled
189 *
190 * FIXME: integrate rfkill with mac80211 and then add this
191 * WARN_ON() back
192 *
Johannes Bergd73782f2008-10-07 12:04:34 +0200193 */
Reinette Chatre447107f2008-12-04 14:49:08 -0800194 /* WARN_ON(ret); */
Johannes Bergd73782f2008-10-07 12:04:34 +0200195 }
Johannes Bergb2c258f2007-07-27 15:43:23 +0200196
197 return ret;
198}
199
Johannes Berg471b3ef2007-12-28 14:32:58 +0100200void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
201 u32 changed)
Daniel Draked9430a32007-07-27 15:43:24 +0200202{
Johannes Berg471b3ef2007-12-28 14:32:58 +0100203 struct ieee80211_local *local = sdata->local;
204
Felix Fietkau990baec2014-04-09 00:08:01 +0200205 if (!changed || sdata->vif.type == NL80211_IFTYPE_AP_VLAN)
Johannes Berg471b3ef2007-12-28 14:32:58 +0100206 return;
207
Johannes Berg12375ef2009-11-25 20:30:31 +0100208 drv_bss_info_changed(local, sdata, &sdata->vif.bss_conf, changed);
Daniel Draked9430a32007-07-27 15:43:24 +0200209}
210
Jasper Bryant-Greenef698d852008-08-03 12:04:37 +1200211u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata)
Daniel Draked9430a32007-07-27 15:43:24 +0200212{
Johannes Bergbda39332008-10-11 01:51:51 +0200213 sdata->vif.bss_conf.use_cts_prot = false;
214 sdata->vif.bss_conf.use_short_preamble = false;
215 sdata->vif.bss_conf.use_short_slot = false;
Johannes Berg7a5158e2008-10-08 10:59:33 +0200216 return BSS_CHANGED_ERP_CTS_PROT |
217 BSS_CHANGED_ERP_PREAMBLE |
218 BSS_CHANGED_ERP_SLOT;
Daniel Draked9430a32007-07-27 15:43:24 +0200219}
220
Jiri Bencf0706e82007-05-05 11:45:53 -0700221static void ieee80211_tasklet_handler(unsigned long data)
222{
223 struct ieee80211_local *local = (struct ieee80211_local *) data;
224 struct sk_buff *skb;
Jiri Bencf0706e82007-05-05 11:45:53 -0700225
226 while ((skb = skb_dequeue(&local->skb_queue)) ||
227 (skb = skb_dequeue(&local->skb_queue_unreliable))) {
228 switch (skb->pkt_type) {
229 case IEEE80211_RX_MSG:
Johannes Berg51fb61e2007-12-19 01:31:27 +0100230 /* Clear skb->pkt_type in order to not confuse kernel
Jiri Bencf0706e82007-05-05 11:45:53 -0700231 * netstack. */
232 skb->pkt_type = 0;
Johannes Berg005e4722012-02-26 11:24:35 +0100233 ieee80211_rx(&local->hw, skb);
Jiri Bencf0706e82007-05-05 11:45:53 -0700234 break;
235 case IEEE80211_TX_STATUS_MSG:
Jiri Bencf0706e82007-05-05 11:45:53 -0700236 skb->pkt_type = 0;
Johannes Berg005e4722012-02-26 11:24:35 +0100237 ieee80211_tx_status(&local->hw, skb);
Jiri Bencf0706e82007-05-05 11:45:53 -0700238 break;
Johannes Bergf4ea83d2008-06-30 15:10:46 +0200239 default:
Larry Finger5e3f3082008-12-17 14:26:59 -0600240 WARN(1, "mac80211: Packet is of unknown type %d\n",
241 skb->pkt_type);
Jiri Bencf0706e82007-05-05 11:45:53 -0700242 dev_kfree_skb(skb);
243 break;
244 }
245 }
246}
247
Johannes Bergf2753dd2009-04-14 10:09:24 +0200248static void ieee80211_restart_work(struct work_struct *work)
249{
250 struct ieee80211_local *local =
251 container_of(work, struct ieee80211_local, restart_work);
252
Stanislaw Gruszkabc868632010-10-01 14:05:27 +0200253 /* wait for scan work complete */
254 flush_workqueue(local->workqueue);
255
David Spinadeld43c6b62013-12-08 21:48:57 +0200256 WARN(test_bit(SCAN_HW_SCANNING, &local->scanning),
257 "%s called with hardware scan in progress\n", __func__);
Stanislaw Gruszkabc868632010-10-01 14:05:27 +0200258
Johannes Bergf2753dd2009-04-14 10:09:24 +0200259 rtnl_lock();
Stanislaw Gruszka4136c422010-10-06 11:22:10 +0200260 ieee80211_scan_cancel(local);
Johannes Bergf2753dd2009-04-14 10:09:24 +0200261 ieee80211_reconfig(local);
262 rtnl_unlock();
263}
264
265void ieee80211_restart_hw(struct ieee80211_hw *hw)
266{
267 struct ieee80211_local *local = hw_to_local(hw);
268
Johannes Bergb5878a22010-04-07 16:48:40 +0200269 trace_api_restart_hw(local);
270
Michael Bueschb196d032011-03-07 13:09:12 +0100271 wiphy_info(hw->wiphy,
272 "Hardware restart was requested\n");
273
John W. Linville18145c62010-08-30 15:12:02 -0400274 /* use this reason, ieee80211_reconfig will unblock it */
Johannes Berg445ea4e2013-02-13 12:25:28 +0100275 ieee80211_stop_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP,
Luciano Coelhocca07b02014-06-13 16:30:05 +0300276 IEEE80211_QUEUE_STOP_REASON_SUSPEND,
277 false);
Johannes Bergf2753dd2009-04-14 10:09:24 +0200278
Arik Nemtsov04800ad2012-06-06 11:25:02 +0300279 /*
280 * Stop all Rx during the reconfig. We don't want state changes
281 * or driver callbacks while this is in progress.
282 */
283 local->in_reconfig = true;
284 barrier();
285
Johannes Bergf2753dd2009-04-14 10:09:24 +0200286 schedule_work(&local->restart_work);
287}
288EXPORT_SYMBOL(ieee80211_restart_hw);
289
John W. Linville26b36cf2010-06-04 14:25:44 -0400290#ifdef CONFIG_INET
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +0300291static int ieee80211_ifa_changed(struct notifier_block *nb,
292 unsigned long data, void *arg)
293{
294 struct in_ifaddr *ifa = arg;
295 struct ieee80211_local *local =
296 container_of(nb, struct ieee80211_local,
297 ifa_notifier);
298 struct net_device *ndev = ifa->ifa_dev->dev;
299 struct wireless_dev *wdev = ndev->ieee80211_ptr;
Juuso Oikarinen68542962010-06-09 13:43:26 +0300300 struct in_device *idev;
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +0300301 struct ieee80211_sub_if_data *sdata;
Juuso Oikarinen68542962010-06-09 13:43:26 +0300302 struct ieee80211_bss_conf *bss_conf;
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +0300303 struct ieee80211_if_managed *ifmgd;
Juuso Oikarinen68542962010-06-09 13:43:26 +0300304 int c = 0;
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +0300305
306 /* Make sure it's our interface that got changed */
307 if (!wdev)
308 return NOTIFY_DONE;
309
310 if (wdev->wiphy != local->hw.wiphy)
311 return NOTIFY_DONE;
312
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +0300313 sdata = IEEE80211_DEV_TO_SUB_IF(ndev);
Juuso Oikarinen68542962010-06-09 13:43:26 +0300314 bss_conf = &sdata->vif.bss_conf;
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +0300315
316 /* ARP filtering is only supported in managed mode */
317 if (sdata->vif.type != NL80211_IFTYPE_STATION)
318 return NOTIFY_DONE;
319
Eric Dumazet95ae6b22010-09-15 04:04:31 +0000320 idev = __in_dev_get_rtnl(sdata->dev);
Juuso Oikarinen68542962010-06-09 13:43:26 +0300321 if (!idev)
322 return NOTIFY_DONE;
323
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +0300324 ifmgd = &sdata->u.mgd;
Johannes Berg8d61ffa2013-05-10 12:32:47 +0200325 sdata_lock(sdata);
Juuso Oikarinen68542962010-06-09 13:43:26 +0300326
327 /* Copy the addresses to the bss_conf list */
328 ifa = idev->ifa_list;
Johannes Berg0f19b412013-01-14 16:39:07 +0100329 while (ifa) {
330 if (c < IEEE80211_BSS_ARP_ADDR_LIST_LEN)
331 bss_conf->arp_addr_list[c] = ifa->ifa_address;
Juuso Oikarinen68542962010-06-09 13:43:26 +0300332 ifa = ifa->ifa_next;
333 c++;
334 }
335
Juuso Oikarinen68542962010-06-09 13:43:26 +0300336 bss_conf->arp_addr_cnt = c;
337
Eliad Peller53d69c32011-12-12 15:30:04 +0200338 /* Configure driver only if associated (which also implies it is up) */
Johannes Berg0f19b412013-01-14 16:39:07 +0100339 if (ifmgd->associated)
Juuso Oikarinen68542962010-06-09 13:43:26 +0300340 ieee80211_bss_info_change_notify(sdata,
341 BSS_CHANGED_ARP_FILTER);
Juuso Oikarinen68542962010-06-09 13:43:26 +0300342
Johannes Berg8d61ffa2013-05-10 12:32:47 +0200343 sdata_unlock(sdata);
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +0300344
Zhao, Gang8bd811a2014-04-21 12:53:05 +0800345 return NOTIFY_OK;
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +0300346}
John W. Linville26b36cf2010-06-04 14:25:44 -0400347#endif
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +0300348
Johannes Berga65240c2013-01-14 15:14:34 +0100349#if IS_ENABLED(CONFIG_IPV6)
350static int ieee80211_ifa6_changed(struct notifier_block *nb,
351 unsigned long data, void *arg)
352{
353 struct inet6_ifaddr *ifa = (struct inet6_ifaddr *)arg;
354 struct inet6_dev *idev = ifa->idev;
355 struct net_device *ndev = ifa->idev->dev;
356 struct ieee80211_local *local =
357 container_of(nb, struct ieee80211_local, ifa6_notifier);
358 struct wireless_dev *wdev = ndev->ieee80211_ptr;
359 struct ieee80211_sub_if_data *sdata;
360
361 /* Make sure it's our interface that got changed */
362 if (!wdev || wdev->wiphy != local->hw.wiphy)
363 return NOTIFY_DONE;
364
365 sdata = IEEE80211_DEV_TO_SUB_IF(ndev);
366
367 /*
368 * For now only support station mode. This is mostly because
369 * doing AP would have to handle AP_VLAN in some way ...
370 */
371 if (sdata->vif.type != NL80211_IFTYPE_STATION)
372 return NOTIFY_DONE;
373
374 drv_ipv6_addr_change(local, sdata, idev);
375
Zhao, Gang8bd811a2014-04-21 12:53:05 +0800376 return NOTIFY_OK;
Johannes Berga65240c2013-01-14 15:14:34 +0100377}
378#endif
379
Johannes Berg2e161f72010-08-12 15:38:38 +0200380/* There isn't a lot of sense in it, but you can transmit anything you like */
381static const struct ieee80211_txrx_stypes
382ieee80211_default_mgmt_stypes[NUM_NL80211_IFTYPES] = {
383 [NL80211_IFTYPE_ADHOC] = {
384 .tx = 0xffff,
Will Hawkins3bfda622012-06-19 17:59:14 -0400385 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
386 BIT(IEEE80211_STYPE_AUTH >> 4) |
Antonio Quartulli41e31b82012-11-30 00:18:12 +0100387 BIT(IEEE80211_STYPE_DEAUTH >> 4) |
388 BIT(IEEE80211_STYPE_PROBE_REQ >> 4),
Johannes Berg2e161f72010-08-12 15:38:38 +0200389 },
390 [NL80211_IFTYPE_STATION] = {
391 .tx = 0xffff,
392 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
393 BIT(IEEE80211_STYPE_PROBE_REQ >> 4),
394 },
395 [NL80211_IFTYPE_AP] = {
396 .tx = 0xffff,
397 .rx = BIT(IEEE80211_STYPE_ASSOC_REQ >> 4) |
398 BIT(IEEE80211_STYPE_REASSOC_REQ >> 4) |
399 BIT(IEEE80211_STYPE_PROBE_REQ >> 4) |
400 BIT(IEEE80211_STYPE_DISASSOC >> 4) |
401 BIT(IEEE80211_STYPE_AUTH >> 4) |
402 BIT(IEEE80211_STYPE_DEAUTH >> 4) |
403 BIT(IEEE80211_STYPE_ACTION >> 4),
404 },
405 [NL80211_IFTYPE_AP_VLAN] = {
406 /* copy AP */
407 .tx = 0xffff,
408 .rx = BIT(IEEE80211_STYPE_ASSOC_REQ >> 4) |
409 BIT(IEEE80211_STYPE_REASSOC_REQ >> 4) |
410 BIT(IEEE80211_STYPE_PROBE_REQ >> 4) |
411 BIT(IEEE80211_STYPE_DISASSOC >> 4) |
412 BIT(IEEE80211_STYPE_AUTH >> 4) |
413 BIT(IEEE80211_STYPE_DEAUTH >> 4) |
414 BIT(IEEE80211_STYPE_ACTION >> 4),
415 },
Johannes Berg2ca27bc2010-09-16 14:58:23 +0200416 [NL80211_IFTYPE_P2P_CLIENT] = {
417 .tx = 0xffff,
418 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
419 BIT(IEEE80211_STYPE_PROBE_REQ >> 4),
420 },
421 [NL80211_IFTYPE_P2P_GO] = {
422 .tx = 0xffff,
423 .rx = BIT(IEEE80211_STYPE_ASSOC_REQ >> 4) |
424 BIT(IEEE80211_STYPE_REASSOC_REQ >> 4) |
425 BIT(IEEE80211_STYPE_PROBE_REQ >> 4) |
426 BIT(IEEE80211_STYPE_DISASSOC >> 4) |
427 BIT(IEEE80211_STYPE_AUTH >> 4) |
428 BIT(IEEE80211_STYPE_DEAUTH >> 4) |
429 BIT(IEEE80211_STYPE_ACTION >> 4),
430 },
Javier Cardonac7108a72010-12-16 17:37:50 -0800431 [NL80211_IFTYPE_MESH_POINT] = {
432 .tx = 0xffff,
Javier Cardona71839122011-04-07 15:08:31 -0700433 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
434 BIT(IEEE80211_STYPE_AUTH >> 4) |
435 BIT(IEEE80211_STYPE_DEAUTH >> 4),
Javier Cardonac7108a72010-12-16 17:37:50 -0800436 },
Johannes Bergf142c6b2012-06-18 20:07:15 +0200437 [NL80211_IFTYPE_P2P_DEVICE] = {
438 .tx = 0xffff,
439 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
440 BIT(IEEE80211_STYPE_PROBE_REQ >> 4),
441 },
Johannes Berg2e161f72010-08-12 15:38:38 +0200442};
443
Ben Greearef96a8422011-11-18 11:32:00 -0800444static const struct ieee80211_ht_cap mac80211_ht_capa_mod_mask = {
445 .ampdu_params_info = IEEE80211_HT_AMPDU_PARM_FACTOR |
446 IEEE80211_HT_AMPDU_PARM_DENSITY,
447
448 .cap_info = cpu_to_le16(IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
449 IEEE80211_HT_CAP_MAX_AMSDU |
Ben Greearbc0784d2012-12-12 16:56:20 -0800450 IEEE80211_HT_CAP_SGI_20 |
Pawel Kulakowskia2e74952014-04-01 07:13:21 +0200451 IEEE80211_HT_CAP_SGI_40 |
Jouni Malinen9a07bf52014-04-15 19:13:56 +0300452 IEEE80211_HT_CAP_LDPC_CODING |
453 IEEE80211_HT_CAP_40MHZ_INTOLERANT),
Ben Greearef96a8422011-11-18 11:32:00 -0800454 .mcs = {
455 .rx_mask = { 0xff, 0xff, 0xff, 0xff, 0xff,
456 0xff, 0xff, 0xff, 0xff, 0xff, },
457 },
458};
459
Johannes Bergdd5ecfe2013-02-21 17:40:19 +0100460static const struct ieee80211_vht_cap mac80211_vht_capa_mod_mask = {
461 .vht_cap_info =
462 cpu_to_le32(IEEE80211_VHT_CAP_RXLDPC |
463 IEEE80211_VHT_CAP_SHORT_GI_80 |
464 IEEE80211_VHT_CAP_SHORT_GI_160 |
465 IEEE80211_VHT_CAP_RXSTBC_1 |
466 IEEE80211_VHT_CAP_RXSTBC_2 |
467 IEEE80211_VHT_CAP_RXSTBC_3 |
468 IEEE80211_VHT_CAP_RXSTBC_4 |
469 IEEE80211_VHT_CAP_TXSTBC |
470 IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE |
471 IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE |
472 IEEE80211_VHT_CAP_TX_ANTENNA_PATTERN |
473 IEEE80211_VHT_CAP_RX_ANTENNA_PATTERN |
474 IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK),
475 .supp_mcs = {
476 .rx_mcs_map = cpu_to_le16(~0),
477 .tx_mcs_map = cpu_to_le16(~0),
478 },
479};
480
Ben Greearad287572014-10-22 12:23:01 -0700481struct ieee80211_hw *ieee80211_alloc_hw_nm(size_t priv_data_len,
482 const struct ieee80211_ops *ops,
483 const char *requested_name)
Jiri Bencf0706e82007-05-05 11:45:53 -0700484{
Jiri Bencf0706e82007-05-05 11:45:53 -0700485 struct ieee80211_local *local;
Johannes Berg96f5e662009-02-12 00:51:53 +0100486 int priv_size, i;
Jiri Bencf0706e82007-05-05 11:45:53 -0700487 struct wiphy *wiphy;
Johannes Bergfe57d9f2012-07-26 14:55:08 +0200488 bool use_chanctx;
Jiri Bencf0706e82007-05-05 11:45:53 -0700489
Johannes Bergc0af0732012-07-26 14:42:10 +0200490 if (WARN_ON(!ops->tx || !ops->start || !ops->stop || !ops->config ||
491 !ops->add_interface || !ops->remove_interface ||
492 !ops->configure_filter))
493 return NULL;
494
Johannes Bergf09603a2012-01-20 13:55:21 +0100495 if (WARN_ON(ops->sta_state && (ops->sta_add || ops->sta_remove)))
496 return NULL;
497
Johannes Berge269d862012-07-26 14:46:32 +0200498 /* check all or no channel context operations exist */
499 i = !!ops->add_chanctx + !!ops->remove_chanctx +
500 !!ops->change_chanctx + !!ops->assign_vif_chanctx +
501 !!ops->unassign_vif_chanctx;
502 if (WARN_ON(i != 0 && i != 5))
503 return NULL;
Johannes Bergfe57d9f2012-07-26 14:55:08 +0200504 use_chanctx = i == 5;
Johannes Berge269d862012-07-26 14:46:32 +0200505
Jiri Bencf0706e82007-05-05 11:45:53 -0700506 /* Ensure 32-byte alignment of our private data and hw private data.
507 * We use the wiphy priv data for both our ieee80211_local and for
508 * the driver's private data
509 *
510 * In memory it'll be like this:
511 *
512 * +-------------------------+
513 * | struct wiphy |
514 * +-------------------------+
515 * | struct ieee80211_local |
516 * +-------------------------+
517 * | driver's private data |
518 * +-------------------------+
519 *
520 */
Eric Dumazet1ce8e7b2009-05-27 04:42:37 +0000521 priv_size = ALIGN(sizeof(*local), NETDEV_ALIGN) + priv_data_len;
Jiri Bencf0706e82007-05-05 11:45:53 -0700522
Ben Greearad287572014-10-22 12:23:01 -0700523 wiphy = wiphy_new_nm(&mac80211_config_ops, priv_size, requested_name);
Jiri Bencf0706e82007-05-05 11:45:53 -0700524
525 if (!wiphy)
526 return NULL;
527
Johannes Berg2e161f72010-08-12 15:38:38 +0200528 wiphy->mgmt_stypes = ieee80211_default_mgmt_stypes;
529
Johannes Berg207aba62010-12-10 17:10:44 +0100530 wiphy->privid = mac80211_wiphy_privid;
531
Johannes Berg9bc383d2009-11-19 11:55:19 +0100532 wiphy->flags |= WIPHY_FLAG_NETNS_OK |
533 WIPHY_FLAG_4ADDR_AP |
Johannes Bergee971922011-11-04 11:18:18 +0100534 WIPHY_FLAG_4ADDR_STATION |
Johannes Berg7c4ef712011-11-18 15:33:48 +0100535 WIPHY_FLAG_REPORTS_OBSS |
Johannes Berg81ddbb52012-03-26 18:47:18 +0200536 WIPHY_FLAG_OFFCHAN_TX;
537
538 if (ops->remain_on_channel)
539 wiphy->flags |= WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL;
Johannes Berg207aba62010-12-10 17:10:44 +0100540
Johannes Bergb2922192012-10-12 10:55:53 +0200541 wiphy->features |= NL80211_FEATURE_SK_TX_STATUS |
542 NL80211_FEATURE_SAE |
Johannes Berg1ea6f9c2012-10-24 10:59:25 +0200543 NL80211_FEATURE_HT_IBSS |
Thomas Pedersena6dad6a2013-03-04 13:06:12 -0800544 NL80211_FEATURE_VIF_TXPOWER |
Ben Greearb5dfae02014-10-22 12:23:06 -0700545 NL80211_FEATURE_MAC_ON_CREATE |
Thomas Pedersena6dad6a2013-03-04 13:06:12 -0800546 NL80211_FEATURE_USERSPACE_MPM;
Johannes Berga729cff2011-11-06 14:13:34 +0100547
Sam Lefflercd2bb512012-10-11 21:03:35 -0700548 if (!ops->hw_scan)
Antonio Quartulli5c95b942012-10-16 08:39:22 +0200549 wiphy->features |= NL80211_FEATURE_LOW_PRIORITY_SCAN |
550 NL80211_FEATURE_AP_SCAN;
551
Sam Lefflercd2bb512012-10-11 21:03:35 -0700552
Johannes Berg207aba62010-12-10 17:10:44 +0100553 if (!ops->set_key)
554 wiphy->flags |= WIPHY_FLAG_IBSS_RSN;
Johannes Berg18a83652009-03-31 12:12:05 +0200555
Johannes Berg0c1ad2c2009-12-23 13:15:39 +0100556 wiphy->bss_priv_size = sizeof(struct ieee80211_bss);
Jiri Bencf0706e82007-05-05 11:45:53 -0700557
558 local = wiphy_priv(wiphy);
Johannes Bergde95a542009-04-01 11:58:36 +0200559
Johannes Berg7bedd0c2015-02-13 21:55:15 +0100560 if (sta_info_init(local))
561 goto err_free;
562
Jiri Bencf0706e82007-05-05 11:45:53 -0700563 local->hw.wiphy = wiphy;
564
Eric Dumazet1ce8e7b2009-05-27 04:42:37 +0000565 local->hw.priv = (char *)local + ALIGN(sizeof(*local), NETDEV_ALIGN);
Jiri Bencf0706e82007-05-05 11:45:53 -0700566
567 local->ops = ops;
Johannes Bergfe57d9f2012-07-26 14:55:08 +0200568 local->use_chanctx = use_chanctx;
Jiri Bencf0706e82007-05-05 11:45:53 -0700569
Johannes Berge6a98542008-10-21 12:40:02 +0200570 /* set up some defaults */
571 local->hw.queues = 1;
572 local->hw.max_rates = 1;
Helmut Schaa78be49e2010-10-02 11:31:55 +0200573 local->hw.max_report_rates = 0;
Luciano Coelhodf6ba5d2011-01-12 15:26:30 +0200574 local->hw.max_rx_aggregation_subframes = IEEE80211_MAX_AMPDU_BUF;
Helmut Schaa39e68712011-08-05 11:46:19 +0200575 local->hw.max_tx_aggregation_subframes = IEEE80211_MAX_AMPDU_BUF;
Johannes Berg3a25a8c2012-04-03 16:28:50 +0200576 local->hw.offchannel_tx_hw_queue = IEEE80211_INVAL_HW_QUEUE;
Jouni Malinenb9a5f8ca2009-04-20 18:39:05 +0200577 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
578 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
Johannes Bergac55d2f2012-05-10 09:09:10 +0200579 local->hw.radiotap_mcs_details = IEEE80211_RADIOTAP_MCS_HAVE_MCS |
580 IEEE80211_RADIOTAP_MCS_HAVE_GI |
581 IEEE80211_RADIOTAP_MCS_HAVE_BW;
Johannes Berg51648922012-11-22 23:00:18 +0100582 local->hw.radiotap_vht_details = IEEE80211_RADIOTAP_VHT_KNOWN_GI |
583 IEEE80211_RADIOTAP_VHT_KNOWN_BANDWIDTH;
Alexander Bondar219c3862013-01-22 16:52:23 +0200584 local->hw.uapsd_queues = IEEE80211_DEFAULT_UAPSD_QUEUES;
585 local->hw.uapsd_max_sp_len = IEEE80211_DEFAULT_MAX_SP_LEN;
Johannes Berg1ea6f9c2012-10-24 10:59:25 +0200586 local->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
Ben Greearef96a8422011-11-18 11:32:00 -0800587 wiphy->ht_capa_mod_mask = &mac80211_ht_capa_mod_mask;
Johannes Bergdd5ecfe2013-02-21 17:40:19 +0100588 wiphy->vht_capa_mod_mask = &mac80211_vht_capa_mod_mask;
Jiri Bencf0706e82007-05-05 11:45:53 -0700589
Luciano Coelhoe9a21942014-10-08 09:48:36 +0300590 local->ext_capa[7] = WLAN_EXT_CAPA8_OPMODE_NOTIF;
591
592 wiphy->extended_capabilities = local->ext_capa;
593 wiphy->extended_capabilities_mask = local->ext_capa;
594 wiphy->extended_capabilities_len =
595 ARRAY_SIZE(local->ext_capa);
596
Johannes Berg79010422007-09-18 17:29:21 -0400597 INIT_LIST_HEAD(&local->interfaces);
YOSHIFUJI Hideaki / 吉藤英明2f787b02010-04-04 17:59:30 +0000598
599 __hw_addr_init(&local->mc_list);
600
Johannes Bergc771c9d2009-01-23 22:54:03 +0100601 mutex_init(&local->iflist_mtx);
Johannes Berga1699b72010-07-30 16:46:07 +0200602 mutex_init(&local->mtx);
Jiri Bencf0706e82007-05-05 11:45:53 -0700603
Johannes Bergad0e2b52010-06-01 10:19:19 +0200604 mutex_init(&local->key_mtx);
Johannes Berg3b8d81e02009-06-17 17:43:56 +0200605 spin_lock_init(&local->filter_lock);
Christian Lamparterf9e124f2013-02-04 17:44:44 +0000606 spin_lock_init(&local->rx_path_lock);
Kalle Valoce7c9112008-12-18 23:35:20 +0200607 spin_lock_init(&local->queue_stop_reason_lock);
608
Michal Kaziord01a1e62012-06-26 14:37:16 +0200609 INIT_LIST_HEAD(&local->chanctx_list);
610 mutex_init(&local->chanctx_mtx);
611
Johannes Bergc2b13452008-09-11 00:01:55 +0200612 INIT_DELAYED_WORK(&local->scan_work, ieee80211_scan_work);
Jiri Bencf0706e82007-05-05 11:45:53 -0700613
Johannes Bergf2753dd2009-04-14 10:09:24 +0200614 INIT_WORK(&local->restart_work, ieee80211_restart_work);
615
Simon Wunderlich164eb022013-02-08 18:16:20 +0100616 INIT_WORK(&local->radar_detected_work,
617 ieee80211_dfs_radar_detected_work);
618
Johannes Berg3ac64be2009-08-17 16:16:53 +0200619 INIT_WORK(&local->reconfig_filter, ieee80211_reconfig_filter);
Johannes Berg0f782312009-12-01 13:37:02 +0100620 local->smps_mode = IEEE80211_SMPS_OFF;
Johannes Berg3ac64be2009-08-17 16:16:53 +0200621
Kalle Valo520eb822008-12-18 23:35:27 +0200622 INIT_WORK(&local->dynamic_ps_enable_work,
623 ieee80211_dynamic_ps_enable_work);
624 INIT_WORK(&local->dynamic_ps_disable_work,
625 ieee80211_dynamic_ps_disable_work);
626 setup_timer(&local->dynamic_ps_timer,
627 ieee80211_dynamic_ps_timer, (unsigned long) local);
628
Luciano Coelho85a99942011-05-12 16:28:29 +0300629 INIT_WORK(&local->sched_scan_stopped_work,
630 ieee80211_sched_scan_stopped_work);
631
Johannes Berga729cff2011-11-06 14:13:34 +0100632 spin_lock_init(&local->ack_status_lock);
633 idr_init(&local->ack_status_frames);
Johannes Berga729cff2011-11-06 14:13:34 +0100634
Johannes Berga6a67db2010-06-10 10:21:41 +0200635 for (i = 0; i < IEEE80211_MAX_QUEUES; i++) {
Johannes Berg2a577d92009-03-23 17:28:37 +0100636 skb_queue_head_init(&local->pending[i]);
Johannes Berga6a67db2010-06-10 10:21:41 +0200637 atomic_set(&local->agg_queue_stop[i], 0);
638 }
Jiri Bencf0706e82007-05-05 11:45:53 -0700639 tasklet_init(&local->tx_pending_tasklet, ieee80211_tx_pending,
640 (unsigned long)local);
Jiri Bencf0706e82007-05-05 11:45:53 -0700641
642 tasklet_init(&local->tasklet,
643 ieee80211_tasklet_handler,
644 (unsigned long) local);
Jiri Bencf0706e82007-05-05 11:45:53 -0700645
646 skb_queue_head_init(&local->skb_queue);
647 skb_queue_head_init(&local->skb_queue_unreliable);
648
Johannes Bergfe67c912010-11-27 20:02:59 +0100649 ieee80211_led_names(local);
650
Johannes Berg2eb278e2012-06-05 14:28:42 +0200651 ieee80211_roc_setup(local);
Johannes Berg21f83582010-12-18 17:20:47 +0100652
Johannes Berg005e4722012-02-26 11:24:35 +0100653 return &local->hw;
Johannes Berg7bedd0c2015-02-13 21:55:15 +0100654 err_free:
655 wiphy_free(wiphy);
656 return NULL;
Jiri Bencf0706e82007-05-05 11:45:53 -0700657}
Ben Greearad287572014-10-22 12:23:01 -0700658EXPORT_SYMBOL(ieee80211_alloc_hw_nm);
Jiri Bencf0706e82007-05-05 11:45:53 -0700659
Max Stepanov2475b1cc2013-03-24 14:23:27 +0200660static int ieee80211_init_cipher_suites(struct ieee80211_local *local)
Jiri Bencf0706e82007-05-05 11:45:53 -0700661{
Max Stepanov2475b1cc2013-03-24 14:23:27 +0200662 bool have_wep = !(IS_ERR(local->wep_tx_tfm) ||
663 IS_ERR(local->wep_rx_tfm));
664 bool have_mfp = local->hw.flags & IEEE80211_HW_MFP_CAPABLE;
Max Stepanov2475b1cc2013-03-24 14:23:27 +0200665 int n_suites = 0, r = 0, w = 0;
666 u32 *suites;
Johannes Berg25e47c12009-04-02 20:14:06 +0200667 static const u32 cipher_suites[] = {
Johannes Berg5daa8a82010-08-10 09:46:41 +0200668 /* keep WEP first, it may be removed below */
Johannes Berg25e47c12009-04-02 20:14:06 +0200669 WLAN_CIPHER_SUITE_WEP40,
670 WLAN_CIPHER_SUITE_WEP104,
671 WLAN_CIPHER_SUITE_TKIP,
672 WLAN_CIPHER_SUITE_CCMP,
Jouni Malinen2b2ba0d2015-01-24 19:52:07 +0200673 WLAN_CIPHER_SUITE_CCMP_256,
Jouni Malinen00b9cfa2015-01-24 19:52:06 +0200674 WLAN_CIPHER_SUITE_GCMP,
675 WLAN_CIPHER_SUITE_GCMP_256,
Johannes Berg25e47c12009-04-02 20:14:06 +0200676
677 /* keep last -- depends on hw flags! */
Jouni Malinen56c52da2015-01-24 19:52:08 +0200678 WLAN_CIPHER_SUITE_AES_CMAC,
679 WLAN_CIPHER_SUITE_BIP_CMAC_256,
Jouni Malinen8ade5382015-01-24 19:52:09 +0200680 WLAN_CIPHER_SUITE_BIP_GMAC_128,
681 WLAN_CIPHER_SUITE_BIP_GMAC_256,
Johannes Berg25e47c12009-04-02 20:14:06 +0200682 };
Johannes Berg8318d782008-01-24 19:38:38 +0100683
Johannes Bergfa7e1fb2015-01-22 18:44:19 +0100684 if (local->hw.flags & IEEE80211_HW_SW_CRYPTO_CONTROL ||
685 local->hw.wiphy->cipher_suites) {
686 /* If the driver advertises, or doesn't support SW crypto,
687 * we only need to remove WEP if necessary.
688 */
689 if (have_wep)
690 return 0;
Max Stepanov2475b1cc2013-03-24 14:23:27 +0200691
Johannes Bergfa7e1fb2015-01-22 18:44:19 +0100692 /* well if it has _no_ ciphers ... fine */
693 if (!local->hw.wiphy->n_cipher_suites)
694 return 0;
695
696 /* Driver provides cipher suites, but we need to exclude WEP */
697 suites = kmemdup(local->hw.wiphy->cipher_suites,
698 sizeof(u32) * local->hw.wiphy->n_cipher_suites,
699 GFP_KERNEL);
700 if (!suites)
701 return -ENOMEM;
702
703 for (r = 0; r < local->hw.wiphy->n_cipher_suites; r++) {
704 u32 suite = local->hw.wiphy->cipher_suites[r];
705
706 if (suite == WLAN_CIPHER_SUITE_WEP40 ||
707 suite == WLAN_CIPHER_SUITE_WEP104)
708 continue;
709 suites[w++] = suite;
710 }
711 } else if (!local->hw.cipher_schemes) {
712 /* If the driver doesn't have cipher schemes, there's nothing
713 * else to do other than assign the (software supported and
714 * perhaps offloaded) cipher suites.
715 */
Max Stepanov2475b1cc2013-03-24 14:23:27 +0200716 local->hw.wiphy->cipher_suites = cipher_suites;
717 local->hw.wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites);
718
719 if (!have_mfp)
Jouni Malinen8ade5382015-01-24 19:52:09 +0200720 local->hw.wiphy->n_cipher_suites -= 4;
Max Stepanov2475b1cc2013-03-24 14:23:27 +0200721
722 if (!have_wep) {
723 local->hw.wiphy->cipher_suites += 2;
724 local->hw.wiphy->n_cipher_suites -= 2;
725 }
726
Johannes Bergfa7e1fb2015-01-22 18:44:19 +0100727 /* not dynamically allocated, so just return */
Max Stepanov2475b1cc2013-03-24 14:23:27 +0200728 return 0;
Johannes Bergfa7e1fb2015-01-22 18:44:19 +0100729 } else {
730 const struct ieee80211_cipher_scheme *cs;
Max Stepanov2475b1cc2013-03-24 14:23:27 +0200731
Johannes Bergfa7e1fb2015-01-22 18:44:19 +0100732 cs = local->hw.cipher_schemes;
733
734 /* Driver specifies cipher schemes only (but not cipher suites
735 * including the schemes)
736 *
Jouni Malinen00b9cfa2015-01-24 19:52:06 +0200737 * We start counting ciphers defined by schemes, TKIP, CCMP,
Jouni Malinen2b2ba0d2015-01-24 19:52:07 +0200738 * CCMP-256, GCMP, and GCMP-256
Max Stepanov2475b1cc2013-03-24 14:23:27 +0200739 */
Jouni Malinen2b2ba0d2015-01-24 19:52:07 +0200740 n_suites = local->hw.n_cipher_schemes + 5;
Max Stepanov2475b1cc2013-03-24 14:23:27 +0200741
742 /* check if we have WEP40 and WEP104 */
743 if (have_wep)
744 n_suites += 2;
745
Jouni Malinen8ade5382015-01-24 19:52:09 +0200746 /* check if we have AES_CMAC, BIP-CMAC-256, BIP-GMAC-128,
747 * BIP-GMAC-256
748 */
Max Stepanov2475b1cc2013-03-24 14:23:27 +0200749 if (have_mfp)
Jouni Malinen8ade5382015-01-24 19:52:09 +0200750 n_suites += 4;
Max Stepanov2475b1cc2013-03-24 14:23:27 +0200751
752 suites = kmalloc(sizeof(u32) * n_suites, GFP_KERNEL);
753 if (!suites)
754 return -ENOMEM;
755
756 suites[w++] = WLAN_CIPHER_SUITE_CCMP;
Jouni Malinen2b2ba0d2015-01-24 19:52:07 +0200757 suites[w++] = WLAN_CIPHER_SUITE_CCMP_256;
Max Stepanov2475b1cc2013-03-24 14:23:27 +0200758 suites[w++] = WLAN_CIPHER_SUITE_TKIP;
Jouni Malinen00b9cfa2015-01-24 19:52:06 +0200759 suites[w++] = WLAN_CIPHER_SUITE_GCMP;
760 suites[w++] = WLAN_CIPHER_SUITE_GCMP_256;
Max Stepanov2475b1cc2013-03-24 14:23:27 +0200761
762 if (have_wep) {
763 suites[w++] = WLAN_CIPHER_SUITE_WEP40;
764 suites[w++] = WLAN_CIPHER_SUITE_WEP104;
765 }
766
Jouni Malinen56c52da2015-01-24 19:52:08 +0200767 if (have_mfp) {
Max Stepanov2475b1cc2013-03-24 14:23:27 +0200768 suites[w++] = WLAN_CIPHER_SUITE_AES_CMAC;
Jouni Malinen56c52da2015-01-24 19:52:08 +0200769 suites[w++] = WLAN_CIPHER_SUITE_BIP_CMAC_256;
Jouni Malinen8ade5382015-01-24 19:52:09 +0200770 suites[w++] = WLAN_CIPHER_SUITE_BIP_GMAC_128;
771 suites[w++] = WLAN_CIPHER_SUITE_BIP_GMAC_256;
Jouni Malinen56c52da2015-01-24 19:52:08 +0200772 }
Max Stepanov2475b1cc2013-03-24 14:23:27 +0200773
774 for (r = 0; r < local->hw.n_cipher_schemes; r++)
775 suites[w++] = cs[r].cipher;
Max Stepanov2475b1cc2013-03-24 14:23:27 +0200776 }
777
778 local->hw.wiphy->cipher_suites = suites;
779 local->hw.wiphy->n_cipher_suites = w;
780 local->wiphy_ciphers_allocated = true;
781
782 return 0;
783}
784
785int ieee80211_register_hw(struct ieee80211_hw *hw)
786{
787 struct ieee80211_local *local = hw_to_local(hw);
788 int result, i;
789 enum ieee80211_band band;
790 int channels, max_bitrates;
791 bool supp_ht, supp_vht;
792 netdev_features_t feature_whitelist;
793 struct cfg80211_chan_def dflt_chandef = {};
794
Johannes Berg3a25a8c2012-04-03 16:28:50 +0200795 if (hw->flags & IEEE80211_HW_QUEUE_CONTROL &&
796 (local->hw.offchannel_tx_hw_queue == IEEE80211_INVAL_HW_QUEUE ||
797 local->hw.offchannel_tx_hw_queue >= local->hw.queues))
798 return -EINVAL;
799
Arik Nemtsova7a6bdd2014-11-09 18:50:19 +0200800 if ((hw->wiphy->features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH) &&
801 (!local->ops->tdls_channel_switch ||
Arik Nemtsov8a4d32f2014-11-09 18:50:20 +0200802 !local->ops->tdls_cancel_channel_switch ||
803 !local->ops->tdls_recv_channel_switch))
Arik Nemtsova7a6bdd2014-11-09 18:50:19 +0200804 return -EOPNOTSUPP;
805
Larry Finger38bb3e92011-05-05 18:48:47 -0500806#ifdef CONFIG_PM
Johannes Berg964dc9e2013-06-03 17:25:34 +0200807 if (hw->wiphy->wowlan && (!local->ops->suspend || !local->ops->resume))
Johannes Bergeecc4802011-05-04 15:37:29 +0200808 return -EINVAL;
Johannes Bergdfb89c52012-06-27 09:23:48 +0200809#endif
Johannes Bergeecc4802011-05-04 15:37:29 +0200810
Johannes Bergfe57d9f2012-07-26 14:55:08 +0200811 if (!local->use_chanctx) {
812 for (i = 0; i < local->hw.wiphy->n_iface_combinations; i++) {
813 const struct ieee80211_iface_combination *comb;
814
815 comb = &local->hw.wiphy->iface_combinations[i];
816
817 if (comb->num_different_channels > 1)
818 return -EINVAL;
819 }
Johannes Berg746a3362012-10-22 15:20:53 +0200820 } else {
Johannes Bergfe57d9f2012-07-26 14:55:08 +0200821 /*
822 * WDS is currently prohibited when channel contexts are used
823 * because there's no clear definition of which channel WDS
824 * type interfaces use
825 */
826 if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_WDS))
827 return -EINVAL;
Simon Wunderlich164eb022013-02-08 18:16:20 +0100828
Michal Kazior486cf4c2014-10-10 12:43:23 +0200829 /* DFS is not supported with multi-channel combinations yet */
Simon Wunderlich164eb022013-02-08 18:16:20 +0100830 for (i = 0; i < local->hw.wiphy->n_iface_combinations; i++) {
831 const struct ieee80211_iface_combination *comb;
832
833 comb = &local->hw.wiphy->iface_combinations[i];
834
Michal Kazior486cf4c2014-10-10 12:43:23 +0200835 if (comb->radar_detect_widths &&
836 comb->num_different_channels > 1)
Simon Wunderlich164eb022013-02-08 18:16:20 +0100837 return -EINVAL;
838 }
Johannes Bergfe57d9f2012-07-26 14:55:08 +0200839 }
840
Arik Nemtsov72d78722012-05-10 16:18:26 +0300841 /* Only HW csum features are currently compatible with mac80211 */
842 feature_whitelist = NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
843 NETIF_F_HW_CSUM;
844 if (WARN_ON(hw->netdev_features & ~feature_whitelist))
845 return -EINVAL;
846
Helmut Schaa78be49e2010-10-02 11:31:55 +0200847 if (hw->max_report_rates == 0)
848 hw->max_report_rates = hw->max_rates;
849
Johannes Berg04ecd252012-09-11 14:34:12 +0200850 local->rx_chains = 1;
851
Johannes Berg8318d782008-01-24 19:38:38 +0100852 /*
853 * generic code guarantees at least one band,
854 * set this very early because much code assumes
855 * that hw.conf.channel is assigned
856 */
Johannes Berg2a519312009-02-10 21:25:55 +0100857 channels = 0;
Johannes Bergde95a542009-04-01 11:58:36 +0200858 max_bitrates = 0;
Johannes Berg5ef2d412009-03-31 12:12:07 +0200859 supp_ht = false;
Mahesh Palivelaba0afa2f2012-07-02 11:25:12 +0000860 supp_vht = false;
Johannes Berg8318d782008-01-24 19:38:38 +0100861 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
862 struct ieee80211_supported_band *sband;
863
864 sband = local->hw.wiphy->bands[band];
Johannes Bergde95a542009-04-01 11:58:36 +0200865 if (!sband)
866 continue;
Karl Beldanfffa4b12013-04-15 19:04:06 +0200867
868 if (!dflt_chandef.chan) {
869 cfg80211_chandef_create(&dflt_chandef,
870 &sband->channels[0],
871 NL80211_CHAN_NO_HT);
Johannes Berg8318d782008-01-24 19:38:38 +0100872 /* init channel we're on */
Karl Beldanfffa4b12013-04-15 19:04:06 +0200873 if (!local->use_chanctx && !local->_oper_chandef.chan) {
874 local->hw.conf.chandef = dflt_chandef;
875 local->_oper_chandef = dflt_chandef;
876 }
877 local->monitor_chandef = dflt_chandef;
Johannes Berg8318d782008-01-24 19:38:38 +0100878 }
Karl Beldanfffa4b12013-04-15 19:04:06 +0200879
Johannes Bergde95a542009-04-01 11:58:36 +0200880 channels += sband->n_channels;
881
882 if (max_bitrates < sband->n_bitrates)
883 max_bitrates = sband->n_bitrates;
Johannes Berg5ef2d412009-03-31 12:12:07 +0200884 supp_ht = supp_ht || sband->ht_cap.ht_supported;
Mahesh Palivelaba0afa2f2012-07-02 11:25:12 +0000885 supp_vht = supp_vht || sband->vht_cap.vht_supported;
Johannes Berg04ecd252012-09-11 14:34:12 +0200886
887 if (sband->ht_cap.ht_supported)
888 local->rx_chains =
889 max(ieee80211_mcs_to_chains(&sband->ht_cap.mcs),
890 local->rx_chains);
891
892 /* TODO: consider VHT for RX chains, hopefully it's the same */
Johannes Berg8318d782008-01-24 19:38:38 +0100893 }
Jiri Bencf0706e82007-05-05 11:45:53 -0700894
Luis R. Rodriguezf59ac042008-08-29 16:26:43 -0700895 /* if low-level driver supports AP, we also support VLAN */
Johannes Berg7527a782011-05-13 10:58:57 +0200896 if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_AP)) {
897 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_AP_VLAN);
898 hw->wiphy->software_iftypes |= BIT(NL80211_IFTYPE_AP_VLAN);
899 }
Luis R. Rodriguezf59ac042008-08-29 16:26:43 -0700900
901 /* mac80211 always supports monitor */
Johannes Berg7527a782011-05-13 10:58:57 +0200902 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_MONITOR);
903 hw->wiphy->software_iftypes |= BIT(NL80211_IFTYPE_MONITOR);
904
Johannes Berg55de9082012-07-26 17:24:39 +0200905 /* mac80211 doesn't support more than one IBSS interface right now */
Johannes Berg8e621fc2011-05-14 01:55:23 +0200906 for (i = 0; i < hw->wiphy->n_iface_combinations; i++) {
907 const struct ieee80211_iface_combination *c;
908 int j;
909
910 c = &hw->wiphy->iface_combinations[i];
911
Johannes Berg8e621fc2011-05-14 01:55:23 +0200912 for (j = 0; j < c->n_limits; j++)
913 if ((c->limits[j].types & BIT(NL80211_IFTYPE_ADHOC)) &&
914 c->limits[j].max > 1)
915 return -EINVAL;
916 }
917
Johannes Berg5b0ec942014-01-06 16:02:34 +0100918 local->int_scan_req = kzalloc(sizeof(*local->int_scan_req) +
919 sizeof(void *) * channels, GFP_KERNEL);
920 if (!local->int_scan_req)
921 return -ENOMEM;
922
923 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
924 if (!local->hw.wiphy->bands[band])
925 continue;
926 local->int_scan_req->rates[band] = (u32) -1;
927 }
928
Johannes Berg5eb5a522010-08-25 14:34:01 +0200929#ifndef CONFIG_MAC80211_MESH
930 /* mesh depends on Kconfig, but drivers should set it if they want */
931 local->hw.wiphy->interface_modes &= ~BIT(NL80211_IFTYPE_MESH_POINT);
932#endif
933
Javier Cardona1570ca52011-04-07 15:08:35 -0700934 /* if the underlying driver supports mesh, mac80211 will (at least)
935 * provide routing of mesh authentication frames to userspace */
936 if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_MESH_POINT))
937 local->hw.wiphy->flags |= WIPHY_FLAG_MESH_AUTH;
938
Johannes Berga621fa42010-08-27 14:26:54 +0300939 /* mac80211 supports control port protocol changing */
940 local->hw.wiphy->flags |= WIPHY_FLAG_CONTROL_PORT_PROTOCOL;
941
andrea merello52512072014-01-19 22:21:49 +0100942 if (local->hw.flags & IEEE80211_HW_SIGNAL_DBM) {
Johannes Berg77965c92009-02-18 18:45:06 +0100943 local->hw.wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM;
andrea merello52512072014-01-19 22:21:49 +0100944 } else if (local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC) {
Johannes Berg77965c92009-02-18 18:45:06 +0100945 local->hw.wiphy->signal_type = CFG80211_SIGNAL_TYPE_UNSPEC;
andrea merello52512072014-01-19 22:21:49 +0100946 if (hw->max_signal <= 0) {
947 result = -EINVAL;
948 goto fail_wiphy_register;
949 }
950 }
Johannes Berg77965c92009-02-18 18:45:06 +0100951
Johannes Bergde95a542009-04-01 11:58:36 +0200952 /*
953 * Calculate scan IE length -- we need this to alloc
954 * memory and to subtract from the driver limit. It
Jouni Malinendc9f48c2010-10-27 13:40:33 +0300955 * includes the DS Params, (extended) supported rates, and HT
Johannes Bergde95a542009-04-01 11:58:36 +0200956 * information -- SSID is the driver's responsibility.
957 */
Jouni Malinendc9f48c2010-10-27 13:40:33 +0300958 local->scan_ies_len = 4 + max_bitrates /* (ext) supp rates */ +
959 3 /* DS Params */;
Johannes Berg5ef2d412009-03-31 12:12:07 +0200960 if (supp_ht)
961 local->scan_ies_len += 2 + sizeof(struct ieee80211_ht_cap);
Johannes Bergde95a542009-04-01 11:58:36 +0200962
Karl Beldand0e6c212013-03-25 16:26:58 +0100963 if (supp_vht)
Mahesh Palivelaba0afa2f2012-07-02 11:25:12 +0000964 local->scan_ies_len +=
Mahesh Palivelad4950282012-10-10 11:25:40 +0000965 2 + sizeof(struct ieee80211_vht_cap);
Mahesh Palivelaba0afa2f2012-07-02 11:25:12 +0000966
Johannes Bergde95a542009-04-01 11:58:36 +0200967 if (!local->ops->hw_scan) {
968 /* For hw_scan, driver needs to set these up. */
969 local->hw.wiphy->max_scan_ssids = 4;
970 local->hw.wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN;
971 }
972
973 /*
974 * If the driver supports any scan IEs, then assume the
975 * limit includes the IEs mac80211 will add, otherwise
976 * leave it at zero and let the driver sort it out; we
977 * still pass our IEs to the driver but userspace will
978 * not be allowed to in that case.
979 */
980 if (local->hw.wiphy->max_scan_ie_len)
981 local->hw.wiphy->max_scan_ie_len -= local->scan_ies_len;
982
Max Stepanov2475b1cc2013-03-24 14:23:27 +0200983 WARN_ON(!ieee80211_cs_list_valid(local->hw.cipher_schemes,
984 local->hw.n_cipher_schemes));
Johannes Berg3ffc2a92010-08-27 14:26:52 +0300985
Max Stepanov2475b1cc2013-03-24 14:23:27 +0200986 result = ieee80211_init_cipher_suites(local);
987 if (result < 0)
988 goto fail_wiphy_register;
Johannes Berg25e47c12009-04-02 20:14:06 +0200989
Johannes Berg21f83582010-12-18 17:20:47 +0100990 if (!local->ops->remain_on_channel)
991 local->hw.wiphy->max_remain_on_channel_duration = 5000;
Johannes Berga2939112010-12-14 17:54:28 +0100992
Arik Nemtsovdfe018b2011-09-28 14:12:52 +0300993 /* mac80211 based drivers don't support internal TDLS setup */
994 if (local->hw.wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS)
995 local->hw.wiphy->flags |= WIPHY_FLAG_TDLS_EXTERNAL_SETUP;
996
Luciano Coelhoe9a21942014-10-08 09:48:36 +0300997 /* mac80211 supports eCSA, if the driver supports STA CSA at all */
998 if (local->hw.flags & IEEE80211_HW_CHANCTX_STA_CSA)
999 local->ext_capa[0] |= WLAN_EXT_CAPA1_EXT_CHANNEL_SWITCHING;
1000
Andrei Otcheretianski0d06d9b2014-05-09 14:11:47 +03001001 local->hw.wiphy->max_num_csa_counters = IEEE80211_MAX_CSA_COUNTERS_NUM;
1002
Jiri Bencf0706e82007-05-05 11:45:53 -07001003 result = wiphy_register(local->hw.wiphy);
1004 if (result < 0)
Johannes Berg2a519312009-02-10 21:25:55 +01001005 goto fail_wiphy_register;
Jiri Bencf0706e82007-05-05 11:45:53 -07001006
Johannes Berge2530082008-05-17 00:57:14 +02001007 /*
1008 * We use the number of queues for feature tests (QoS, HT) internally
1009 * so restrict them appropriately.
1010 */
Johannes Berge2530082008-05-17 00:57:14 +02001011 if (hw->queues > IEEE80211_MAX_QUEUES)
1012 hw->queues = IEEE80211_MAX_QUEUES;
Johannes Berge2530082008-05-17 00:57:14 +02001013
Luis R. Rodriguez42935ec2009-07-29 20:08:07 -04001014 local->workqueue =
Kees Cookd8537542013-07-03 15:04:57 -07001015 alloc_ordered_workqueue("%s", 0, wiphy_name(local->hw.wiphy));
Luis R. Rodriguez42935ec2009-07-29 20:08:07 -04001016 if (!local->workqueue) {
Jiri Bencf0706e82007-05-05 11:45:53 -07001017 result = -ENOMEM;
1018 goto fail_workqueue;
1019 }
1020
Johannes Bergb306f452007-07-10 19:32:08 +02001021 /*
1022 * The hardware needs headroom for sending the frame,
1023 * and we need some headroom for passing the frame to monitor
1024 * interfaces, but never both at the same time.
1025 */
Jiri Benc33ccad32007-07-18 17:10:44 +02001026 local->tx_headroom = max_t(unsigned int , local->hw.extra_tx_headroom,
Helmut Schaaa2fe8162011-10-11 18:08:54 +02001027 IEEE80211_TX_STATUS_HEADROOM);
Johannes Bergb306f452007-07-10 19:32:08 +02001028
Jiri Bence9f207f2007-05-05 11:46:38 -07001029 debugfs_hw_add(local);
1030
Helmut Schaab4469182010-02-24 14:19:37 +01001031 /*
1032 * if the driver doesn't specify a max listen interval we
1033 * use 5 which should be a safe default
1034 */
Tomas Winklerea95bba2008-07-18 13:53:00 +08001035 if (local->hw.max_listen_interval == 0)
Helmut Schaab4469182010-02-24 14:19:37 +01001036 local->hw.max_listen_interval = 5;
Tomas Winklerea95bba2008-07-18 13:53:00 +08001037
1038 local->hw.conf.listen_interval = local->hw.max_listen_interval;
1039
Juuso Oikarinenff616382010-06-09 09:51:52 +03001040 local->dynamic_ps_forced_timeout = -1;
Juuso Oikarinen195e2942010-04-27 12:47:40 +03001041
Felix Fietkauba8c3d62015-03-27 21:30:37 +01001042 if (!local->hw.txq_ac_max_pending)
1043 local->hw.txq_ac_max_pending = 64;
1044
Alan Jenkinsd4c4a9a2009-04-29 11:41:24 +01001045 result = ieee80211_wep_init(local);
John W. Linville34731872010-07-07 15:07:49 -04001046 if (result < 0)
Joe Perches0fb9a9e2010-08-20 16:25:38 -07001047 wiphy_debug(local->hw.wiphy, "Failed to initialize wep: %d\n",
1048 result);
Alan Jenkinsd4c4a9a2009-04-29 11:41:24 +01001049
Karl Beldan24d47302013-11-19 17:12:05 +01001050 local->hw.conf.flags = IEEE80211_CONF_IDLE;
1051
Mohammed Shafi Shajakhanb57e6b52012-02-09 19:59:43 +05301052 ieee80211_led_init(local);
1053
Jiri Bencf0706e82007-05-05 11:45:53 -07001054 rtnl_lock();
Jiri Bencf0706e82007-05-05 11:45:53 -07001055
Johannes Berg830f9032007-10-28 14:51:05 +01001056 result = ieee80211_init_rate_ctrl_alg(local,
1057 hw->rate_control_algorithm);
Jiri Bencf0706e82007-05-05 11:45:53 -07001058 if (result < 0) {
Joe Perches0fb9a9e2010-08-20 16:25:38 -07001059 wiphy_debug(local->hw.wiphy,
1060 "Failed to initialize rate control algorithm\n");
Jiri Bencf0706e82007-05-05 11:45:53 -07001061 goto fail_rate;
1062 }
1063
Johannes Berg8dffff22008-12-09 00:10:30 +01001064 /* add one default STA interface if supported */
Ben Greeare27513f2014-10-22 12:23:03 -07001065 if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_STATION) &&
1066 !(hw->flags & IEEE80211_HW_NO_AUTO_VIF)) {
Tom Gundersen6bab2e192015-03-18 11:13:39 +01001067 result = ieee80211_if_add(local, "wlan%d", NET_NAME_ENUM, NULL,
Johannes Berg8dffff22008-12-09 00:10:30 +01001068 NL80211_IFTYPE_STATION, NULL);
1069 if (result)
Joe Perches0fb9a9e2010-08-20 16:25:38 -07001070 wiphy_warn(local->hw.wiphy,
1071 "Failed to add default virtual iface\n");
Johannes Berg8dffff22008-12-09 00:10:30 +01001072 }
Jiri Bencf0706e82007-05-05 11:45:53 -07001073
Jiri Bencf0706e82007-05-05 11:45:53 -07001074 rtnl_unlock();
1075
Johannes Berg10f644a2009-04-16 13:17:25 +02001076 local->network_latency_notifier.notifier_call =
1077 ieee80211_max_network_latency;
1078 result = pm_qos_add_notifier(PM_QOS_NETWORK_LATENCY,
1079 &local->network_latency_notifier);
Johannes Berg54330bf2015-01-21 13:52:24 +01001080 if (result)
Johannes Berg10f644a2009-04-16 13:17:25 +02001081 goto fail_pm_qos;
Johannes Berg10f644a2009-04-16 13:17:25 +02001082
John W. Linville26b36cf2010-06-04 14:25:44 -04001083#ifdef CONFIG_INET
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +03001084 local->ifa_notifier.notifier_call = ieee80211_ifa_changed;
1085 result = register_inetaddr_notifier(&local->ifa_notifier);
1086 if (result)
1087 goto fail_ifa;
John W. Linville26b36cf2010-06-04 14:25:44 -04001088#endif
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +03001089
Johannes Berga65240c2013-01-14 15:14:34 +01001090#if IS_ENABLED(CONFIG_IPV6)
1091 local->ifa6_notifier.notifier_call = ieee80211_ifa6_changed;
1092 result = register_inet6addr_notifier(&local->ifa6_notifier);
1093 if (result)
1094 goto fail_ifa6;
1095#endif
1096
Jiri Bencf0706e82007-05-05 11:45:53 -07001097 return 0;
1098
Johannes Berga65240c2013-01-14 15:14:34 +01001099#if IS_ENABLED(CONFIG_IPV6)
1100 fail_ifa6:
Juuso Oikarinen93c08c32010-08-03 08:22:25 +03001101#ifdef CONFIG_INET
Johannes Berga65240c2013-01-14 15:14:34 +01001102 unregister_inetaddr_notifier(&local->ifa_notifier);
1103#endif
1104#endif
1105#if defined(CONFIG_INET) || defined(CONFIG_IPV6)
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +03001106 fail_ifa:
1107 pm_qos_remove_notifier(PM_QOS_NETWORK_LATENCY,
1108 &local->network_latency_notifier);
Juuso Oikarinen93c08c32010-08-03 08:22:25 +03001109#endif
Johannes Berg10f644a2009-04-16 13:17:25 +02001110 fail_pm_qos:
Johannes Berg54330bf2015-01-21 13:52:24 +01001111 rtnl_lock();
1112 rate_control_deinitialize(local);
Johannes Berg10f644a2009-04-16 13:17:25 +02001113 ieee80211_remove_interfaces(local);
Johannes Berg10f644a2009-04-16 13:17:25 +02001114 fail_rate:
Jiri Bencf0706e82007-05-05 11:45:53 -07001115 rtnl_unlock();
Johannes Berg54330bf2015-01-21 13:52:24 +01001116 ieee80211_led_exit(local);
Alan Jenkinsd4c4a9a2009-04-29 11:41:24 +01001117 ieee80211_wep_free(local);
Luis R. Rodriguez42935ec2009-07-29 20:08:07 -04001118 destroy_workqueue(local->workqueue);
Johannes Berg10f644a2009-04-16 13:17:25 +02001119 fail_workqueue:
Jiri Bencf0706e82007-05-05 11:45:53 -07001120 wiphy_unregister(local->hw.wiphy);
Johannes Berg10f644a2009-04-16 13:17:25 +02001121 fail_wiphy_register:
Johannes Berg3ffc2a92010-08-27 14:26:52 +03001122 if (local->wiphy_ciphers_allocated)
1123 kfree(local->hw.wiphy->cipher_suites);
Johannes Berg11ba9642009-08-19 19:45:50 +02001124 kfree(local->int_scan_req);
Jiri Bencf0706e82007-05-05 11:45:53 -07001125 return result;
1126}
1127EXPORT_SYMBOL(ieee80211_register_hw);
1128
Johannes Berg06d181a2014-02-04 20:51:09 +01001129void ieee80211_napi_add(struct ieee80211_hw *hw, struct napi_struct *napi,
1130 struct net_device *napi_dev,
1131 int (*poll)(struct napi_struct *, int),
1132 int weight)
1133{
1134 struct ieee80211_local *local = hw_to_local(hw);
1135
1136 netif_napi_add(napi_dev, napi, poll, weight);
1137 local->napi = napi;
1138}
1139EXPORT_SYMBOL_GPL(ieee80211_napi_add);
1140
Jiri Bencf0706e82007-05-05 11:45:53 -07001141void ieee80211_unregister_hw(struct ieee80211_hw *hw)
1142{
1143 struct ieee80211_local *local = hw_to_local(hw);
Jiri Bencf0706e82007-05-05 11:45:53 -07001144
1145 tasklet_kill(&local->tx_pending_tasklet);
1146 tasklet_kill(&local->tasklet);
1147
Johannes Berg10f644a2009-04-16 13:17:25 +02001148 pm_qos_remove_notifier(PM_QOS_NETWORK_LATENCY,
1149 &local->network_latency_notifier);
John W. Linville26b36cf2010-06-04 14:25:44 -04001150#ifdef CONFIG_INET
Juuso Oikarinen2b2c0092010-05-27 15:32:13 +03001151 unregister_inetaddr_notifier(&local->ifa_notifier);
John W. Linville26b36cf2010-06-04 14:25:44 -04001152#endif
Johannes Berga65240c2013-01-14 15:14:34 +01001153#if IS_ENABLED(CONFIG_IPV6)
1154 unregister_inet6addr_notifier(&local->ifa6_notifier);
1155#endif
Johannes Berg10f644a2009-04-16 13:17:25 +02001156
Jiri Bencf0706e82007-05-05 11:45:53 -07001157 rtnl_lock();
1158
Johannes Berg79010422007-09-18 17:29:21 -04001159 /*
1160 * At this point, interface list manipulations are fine
1161 * because the driver cannot be handing us frames any
1162 * more and the tasklet is killed.
1163 */
Johannes Berg75636522008-07-09 14:40:35 +02001164 ieee80211_remove_interfaces(local);
Johannes Berg5b2812e2007-09-26 14:27:23 +02001165
Jiri Bencf0706e82007-05-05 11:45:53 -07001166 rtnl_unlock();
1167
Christian Lamparter258086a2010-08-22 23:48:25 +02001168 cancel_work_sync(&local->restart_work);
Johannes Berg3ac64be2009-08-17 16:16:53 +02001169 cancel_work_sync(&local->reconfig_filter);
Johannes Berg18db5942013-11-06 10:34:36 +01001170 flush_work(&local->sched_scan_stopped_work);
Johannes Berg3ac64be2009-08-17 16:16:53 +02001171
Jiri Bencf0706e82007-05-05 11:45:53 -07001172 ieee80211_clear_tx_pending(local);
Jiri Bencf0706e82007-05-05 11:45:53 -07001173 rate_control_deinitialize(local);
1174
Joe Perchesf64f9e72009-11-29 16:55:45 -08001175 if (skb_queue_len(&local->skb_queue) ||
1176 skb_queue_len(&local->skb_queue_unreliable))
Joe Perches0fb9a9e2010-08-20 16:25:38 -07001177 wiphy_warn(local->hw.wiphy, "skb_queue not empty\n");
Jiri Bencf0706e82007-05-05 11:45:53 -07001178 skb_queue_purge(&local->skb_queue);
1179 skb_queue_purge(&local->skb_queue_unreliable);
1180
Luis R. Rodriguez42935ec2009-07-29 20:08:07 -04001181 destroy_workqueue(local->workqueue);
Jiri Bencf0706e82007-05-05 11:45:53 -07001182 wiphy_unregister(local->hw.wiphy);
1183 ieee80211_wep_free(local);
1184 ieee80211_led_exit(local);
Johannes Berg5ba63532009-08-07 17:54:07 +02001185 kfree(local->int_scan_req);
Jiri Bencf0706e82007-05-05 11:45:53 -07001186}
1187EXPORT_SYMBOL(ieee80211_unregister_hw);
1188
Johannes Berga729cff2011-11-06 14:13:34 +01001189static int ieee80211_free_ack_frame(int id, void *p, void *data)
1190{
1191 WARN_ONCE(1, "Have pending ack frames!\n");
1192 kfree_skb(p);
1193 return 0;
1194}
1195
Jiri Bencf0706e82007-05-05 11:45:53 -07001196void ieee80211_free_hw(struct ieee80211_hw *hw)
1197{
1198 struct ieee80211_local *local = hw_to_local(hw);
1199
Johannes Bergc771c9d2009-01-23 22:54:03 +01001200 mutex_destroy(&local->iflist_mtx);
Johannes Berga1699b72010-07-30 16:46:07 +02001201 mutex_destroy(&local->mtx);
Johannes Bergc771c9d2009-01-23 22:54:03 +01001202
Johannes Berg3ffc2a92010-08-27 14:26:52 +03001203 if (local->wiphy_ciphers_allocated)
1204 kfree(local->hw.wiphy->cipher_suites);
1205
Johannes Berga729cff2011-11-06 14:13:34 +01001206 idr_for_each(&local->ack_status_frames,
1207 ieee80211_free_ack_frame, NULL);
1208 idr_destroy(&local->ack_status_frames);
1209
Johannes Berg54330bf2015-01-21 13:52:24 +01001210 sta_info_stop(local);
1211
Jiri Bencf0706e82007-05-05 11:45:53 -07001212 wiphy_free(local->hw.wiphy);
1213}
1214EXPORT_SYMBOL(ieee80211_free_hw);
1215
Jiri Bencf0706e82007-05-05 11:45:53 -07001216static int __init ieee80211_init(void)
1217{
1218 struct sk_buff *skb;
1219 int ret;
1220
Johannes Berge039fa42008-05-15 12:55:29 +02001221 BUILD_BUG_ON(sizeof(struct ieee80211_tx_info) > sizeof(skb->cb));
1222 BUILD_BUG_ON(offsetof(struct ieee80211_tx_info, driver_data) +
Johannes Bergc6a1fa12008-10-07 12:04:32 +02001223 IEEE80211_TX_INFO_DRIVER_DATA_SIZE > sizeof(skb->cb));
Jiri Bencf0706e82007-05-05 11:45:53 -07001224
Felix Fietkaucccf1292008-10-05 18:07:45 +02001225 ret = rc80211_minstrel_init();
1226 if (ret)
1227 return ret;
1228
Felix Fietkauec8aa662010-05-13 16:48:03 +02001229 ret = rc80211_minstrel_ht_init();
1230 if (ret)
1231 goto err_minstrel;
1232
Johannes Berg47846c92009-11-25 17:46:19 +01001233 ret = ieee80211_iface_init();
1234 if (ret)
1235 goto err_netdev;
Jiri Bence9f207f2007-05-05 11:46:38 -07001236
Jiri Bencf0706e82007-05-05 11:45:53 -07001237 return 0;
Johannes Berg47846c92009-11-25 17:46:19 +01001238 err_netdev:
Felix Fietkauec8aa662010-05-13 16:48:03 +02001239 rc80211_minstrel_ht_exit();
1240 err_minstrel:
Johannes Berg47846c92009-11-25 17:46:19 +01001241 rc80211_minstrel_exit();
1242
1243 return ret;
Jiri Bencf0706e82007-05-05 11:45:53 -07001244}
1245
Jiri Bencf0706e82007-05-05 11:45:53 -07001246static void __exit ieee80211_exit(void)
1247{
Felix Fietkauec8aa662010-05-13 16:48:03 +02001248 rc80211_minstrel_ht_exit();
Felix Fietkaucccf1292008-10-05 18:07:45 +02001249 rc80211_minstrel_exit();
Johannes Bergac71c692007-10-28 14:17:44 +01001250
Johannes Bergbf7cd942013-02-15 14:40:31 +01001251 ieee80211s_stop();
Johannes Berg902acc72008-02-23 15:17:19 +01001252
Johannes Berg47846c92009-11-25 17:46:19 +01001253 ieee80211_iface_exit();
Johannes Bergd07c7cf2011-05-14 11:04:51 +02001254
1255 rcu_barrier();
Jiri Bencf0706e82007-05-05 11:45:53 -07001256}
1257
1258
Johannes Bergca9938f2007-09-11 12:50:32 +02001259subsys_initcall(ieee80211_init);
Jiri Bencf0706e82007-05-05 11:45:53 -07001260module_exit(ieee80211_exit);
1261
1262MODULE_DESCRIPTION("IEEE 802.11 subsystem");
1263MODULE_LICENSE("GPL");